This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A038855 #13 Jan 02 2014 00:03:04 %S A038855 7,56,63,91,98,189,217,448,469,504,511,602,665,721,728,784,819,875, %T A038855 973,1141,1197,1267,1323,1330,1512,1519,1603,1701,1736,1946,1981,2044, %U A038855 2072,2107,2170,2401,2457,2611,2646,2716,2765,2863,3087,3185,3311,3367 %N A038855 Numbers that are divisible by 7 and are differences between two cubes in at least one way. %o A038855 (PARI) v=vector(3367); for(i=1, 33, for(j=i+1, 34, d=j^3-i^3; if(d<=3367, v[d]++, next(2)))); forstep(n=7, 3367, 7, if(v[n]>0, print1(n ", "))) \\ _Donovan Johnson_, Dec 31 2013 %K A038855 nonn %O A038855 1,1 %A A038855 _Jeff Burch_ %E A038855 2014 changed to 2044 by _Donovan Johnson_, Dec 31 2013